Om episode
War in Ukraine has stiffened the alliance’s spine; leaders meeting this week will refashion troop-deployment plans reflecting a vastly changed security situation. The property sector makes a staggering contribution to carbon emissions, but our correspondent says it is not cleaning up nearly as fast as other industries are. And reflecting on the life of Roman Ratushny, a steely Ukrainian activist.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer